Question

Correct me if I'm wrong please

1. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y = –2x + 4
–5x + 10y = 5 (1 point)
A.parallel
B.perpendicular *
C.neither

2. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y = -1/4x + 10
–2x + 8y = 6 (1 point)
A.parallel
B.perpendicular
C.neither *

Answer 1

is it clear that your first job is to identify the slope of each?

Answer 2

how do I identify the slope? @satellite73

Answer 3

for \(y = –2x + 4 \) the slope is on display
it is the coefficient of the x term

Answer 4

for \[–5x + 10y = 5 \] you can solve for \(y\) to make it look like the previous one

Answer 5

or just know that the slope of \[ax+by=c\] is \(-\frac{a}{b}\)

Answer 6

you got the slope of \[y=-2x+4\]?

Answer 7

ooh i am sorry, i see you have already picked an answer and just want a check

Answer 8

im very confused because I have no idea on how to solve this so am I suppose to put -2+4 into the calculator and find the answer??? im sorry im not good with this please help me solve these so i'd know how to correctly get the right answer

Answer 9

first two are perpendicular like you said

Answer 10

slope of \[y=mx+b\] is \(m\) so the slope of \(y=-2x+4\) is \(-2\)

Answer 11

so the first one is correct? ( perpendicular )
is the second one correct as well?

Answer 12

slope of \[-5x+10y=5\] if you solve for y you get \[y=\frac{1}{2}x+\frac{1}{2}\] slope is \(\frac{1}{2}\)

Answer 13

since \(\frac{1}{2}\) is the "negative reciprocal " of \(-2\) the lines are perpendicular

Answer 14

Okay thank you but what about the 2nd one?? can you show me how to solve that one as well @satellite73

Answer 15

In Problem 2, start by identifying the SLOPES of the two given equations. What are they?
Are the slopes equal?
Are the slopes negative reciprocals of one another?

Answer 16

well since ig it's not neither then is it perpendicular?? @mathmale